Ikea has a couple of clips - they're meant to be for curtains/drapes:
http://www.ikea.com/us/en/catalog/products/73493680
This one includes the wire. http://www.ikea.com/us/en/catalog/products/20079342
24 piece clips: http://www.ikea.com/us/en/catalog/products/20075947
http://www.ikea.com/us/en/catalog/products/90079367

They came in a pack from Ikea...my hubby got this (at my request) for Christmas...he got me three packs (I used them all). He doesn't remember the price, but he does remember it wasn't expensive (Ikea tends to be pretty cheap).